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l(No Mudel.)

GQM. LORTZ.

. BED BOTTOM. No. 494,682.

I Patented Apr. 4, 1893.

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UNITED STATES PATENT OFFICE.

GEORGE M. LORTZ, OF UTIOA, NEW YORK, ASSIGNOR OF ONE-HALF TO EGBER'I M. ANTISDEL, OE SAME PLACE.

BED-Bo'l-ron/Lv SPECIFICATION forming part of Letters Patent No. 494,682, dated April 4, 1893. Application filed October 1, 1892. Serial No. 447,544. (No model.)

T0 a/ZZ whom t may concern:

Beit known that I, GEORGE M. LORTZ, a citizen of the United States of America, residing at Utica, in the county of Oneida and State of N ew York, have invented certain new and useful Improvements in Bed-Bottoms, of which the following is a specification, reference being had therein to the accompanying drawings.

The special object of the invention is to prevent the springs from striking the bed bottom when the Weight rests upon them; secondly to prevent the bed from sagging to whichever side supports the weight. For these purposes, I make the middle of bed bottom to a certain extent, independent of the main frame as hereinafter described.

Figure lis a bottom plan view; Fig. 2 a longitudinal vertical section and Fig. 3 a transverse Vertical section.

In the drawings, A represents the main frame of the bed bottom having three bottom slats a a a at each end. To these slats are attached coiled springs in the usual way, the upperand largest coilof each spring being connected with the adjacent springs and with the top of frame A by means of the short chains B, while said coil is locked by means of a hook and eye c c.

D is an auxiliary frame consisting of the longitudinal slats ct and the two cross-slats a2 a2. Springs C are attached to the slats c and connected by chains B with the top of frame A, as before described.

E represents two strips of band steel arranged at the head and foot of the bed, at right angles to the slats a, and E smaller strips connecting the slats a and placed opposite to the projecting ends of the strips E. These stripsE E are connected by the spiral springs F, while the slats a2 a2 are suspended from the sides of the frame A by means of the four spiral springs G which may be fastened at their ends in any suitable way, but preferably by being hooked in pieces H of malleable iron which have an offset and hole as shown in the drawings. The springs C are all held in an upright position and at a proper distance from frame and from one another by the short chains while the swinging central frame D, upon which rests most of the weight, prevents its springs from being pressed down to the slats a and also keeps the bed from sagging to the side on which the weight is mainly supported. v

I am aware that Patent No. 240,568 was granted by the United States for a support for a woven wire mattress attached to the sides and ends of frame by springs; but this does embody my idea or attain the purpose which I have in View whichis to make only the middle of the slat bottom independent and supported by springs while all the remainder of the frame and slats are lixed and immovable. My aim is to have the elasticity only under the middle of the bed where it is needed. This middle-section is suspended from four vertical coiled springs attached to the sides of the bed bottom, whileit is separated from and kept from contact with the stationary slats by horizontal springs. y

Vhat I claim as new is- In a bed bottom, the frame A havingthe bottom cross slats a at each end and the longitudinal strips E, the middle frame D having longitudinal slats a', cross slats a2 and crossstrips E', the springs F connecting the strips E E', and the vertical spiral springs G by which the frame D is suspended from the sides of the frame A, in combination with conical coiledand connected springs C as and for the purpose set forth.

In testimony whereof I aliix my signature in presence of two witnesses.

GEORGE M. LORTZ.

Witnesses:

O. F. LEEKER, WILLIAM HowARTH. 

